package com.itheima.reggie.config;


import com.itheima.reggie.common.JacksonObjectMapper_解决前端JSON中Long数据问题;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.*;

import java.util.List;

/**
 * @Author: cl
 * @Date: 2022/4/2 - 04 - 02
 * @Description:
 */
@Slf4j
@Configuration
//public class WebMvcConfig extends WebMvcConfigurationSupport {
public class WebMvcConfig implements WebMvcConfigurer {


    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("redirect:backend/index.html");
    }

    /**
     * 设置静态资源映射
     *
     * @param registry
     */
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("放行静态资源。。。。。");

        registry.addResourceHandler("/backend/**")
                .addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**")
                .addResourceLocations("classpath:/front/");
    }


    /**
     * 扩展mvc框架的消息转换器
     *
     * @param converters
     */
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器...");

        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter =
                new MappingJackson2HttpMessageConverter();

        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper_解决前端JSON中Long数据问题());

        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0, messageConverter);
    }
}
